Photoenlargement of two records of microseisms
- designer:
- John Milne
- maker:
- John Johnson Shaw
Photoenlargement of two records of microseisms, recorded on Milne-Shaw seismographs in coalmines at Astley, Lancashire
Photoenlargement of two records of microseisms, recorded on Milne-Shaw seismographs in coalmines at Astley, Lancashire